CPR Device Adjusting Compression Depth for Chest Collapse
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Solution Overview
Problem
Manual cardiopulmonary resuscitation (CPR) can be ineffective due to variations in chest compression depth and frequency, leading to inadequate blood circulation and potential organ damage, especially under stressful conditions or when rescuers become fatigued.
Innovation Solution
A CPR device equipped with a processor that adjusts the compression depth and zero-position based on real-time data, including rescuer input and patient parameters, to ensure consistent and effective chest compressions, even in the presence of chest collapse, using a combination of mechanical and active decompression techniques.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual CPR is performed by trained rescuers, then CPR can be administered to maintain blood circulation, but the compression depth and frequency may vary leading to ineffective chest compressions when rescuers become fatigued or under stress
Solution Approach 1:
The CPR device autonomously performs chest compressions without requiring continuous human intervention. The mechanical system self-regulates compression depth and frequency based on pre-programmed guidelines, eliminating the need for rescuers to maintain consistent manual pressure despite fatigue or stress.
Solution Approach 2:
The patent replaces the human mechanical system (manual chest compressions) with an automated mechanical CPR device. This substitution ensures consistent compression parameters are maintained without being affected by rescuer physical condition, while the device handles all operational complexity.
2Reliability
If chest compression devices are used to maintain consistent compression parameters, then blood circulation is improved, but the device complexity increases compared to manual CPR
Solution Approach 1:
The CPR device is divided into functional modules: a compression mechanism for delivering chest compressions, a sensor system for detecting chest height and collapse, a processor for analyzing data and generating control signals, and a drive mechanism for actuation. This segmentation allows each component to perform its specific function efficiently while keeping the overall system manageable.
Solution Approach 2:
The device integrates multiple functions into a single system: it performs chest compressions, detects chest height changes, monitors for chest collapse, and automatically adjusts compression parameters. This multi-functionality reduces the need for separate devices and simplifies the overall treatment approach despite the increased capabilities.
3Ease of operation
If the CPR device uses fixed compression depth parameters, then the device operation is simplified, but the compression effectiveness decreases when chest collapse occurs during CPR
Solution Approach 1:
The CPR device dynamically adjusts compression depth and zero-position based on real-time chest height measurements. The system continuously monitors chest collapse and modifies compression parameters accordingly, transitioning from static fixed parameters to adaptive dynamic parameters that respond to changing patient conditions.
Solution Approach 2:
The device incorporates sensors that detect chest height and collapse, providing feedback to the processor. The processor analyzes this feedback and generates control signals to adjust the compression mechanism, creating a closed-loop system that continuously optimizes compression effectiveness based on actual chest conditions.
Data Source
AI summary
The disclosed CPR devices, systems, and methods adjust a compression depth of a compression mechanism to account for chest collapse of the patient receiving CPR. Compression depth can be adjusted up to a maximum depth in some examples. The compression depth can also be adjusted linearly or non-linearly as the zero point or starting position of the patient's chest changes due to chest collapse. Other factors can also be used to adjust the compression depth such as patient parameters that can be observed by a rescuer or sensed by sensors wirelessly connected to or integrated into the system. CPR devices that include active decompression can also use the disclosed techniques for adjusting the chest compression depth as the patient's chest collapses.